US6121522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inbred maize line PH55C
Assignee: Pioneer Hi-Bred International Inc
•
Filing: 1999-02-25
•
Granted: 2000-09-19
•
Expires: 2019-02-25
Abstract
Abstract An inbred maize line, designated PH55C, the plants and seeds of inbred maize line PH55C, methods for producing a maize plant, either inbred or hybrid, produced by crossing the inbred maize line PH55C with itself or with another maize plant, and hybrid maize seeds and plants produced by crossing the inbred line PH55C with another maize line or plant and to methods for producing a maize plant containing in its genetic material one or more transgenes and to the transgenic maize plants produced by that method. This invention also relates to inbred maize lines derived from inbred maize line PH55C, to methods for producing other inbred maize lines derived from inbred maize line PH55C and to the inbred maize lines derived by the use of those methods.
Inventors
- 👤 Pierre Jean Desbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:10
CPC Classifications
A; A01; A01H; A01H5/00; A01H5/10; A01H6/00; A01H6/46; A01H6/4684
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
20 words
Seed of maize inbred line designated PH55C, representative seed of said line having been deposited under ATCC Accession No. PTA-1609.
Claim 2
Dependent Claim
20 words
Seed of maize inbred line designated PH55C, representative seed of said line having been deposited under ATCC Accession No. PTA-1609.
Claim 3
Dependent Claim
30 words
A maize plant, or parts thereof, having all the physiological and morphological characteristics of inbred line PH55C, representative seed of said line having been deposited under ATCC accession No. PTA-1609.
Claim 4
Dependent Claim
30 words
A maize plant, or parts thereof, having all the physiological and morphological characteristics of inbred line PH55C, representative seed of said line having been deposited under ATCC accession No. PTA-1609.
Claim 5
Dependent Claim
12 words
The maize plant of claim 2, wherein said plant is male sterile.
Claim 6
Dependent Claim
45 words
A tissue culture of regenerable cells of a maize plant of inbred line PH55C, representative seed of which have been deposited under ATCC Accession No. PTA-1609, wherein the tissue regenerates plants capable of expressing all the morphological and physiological characteristics of the inbred line PH55C.
Claim 7
Dependent Claim
45 words
A tissue culture of regenerable cells of a maize plant of inbred line PH55C, representative seed of which have been deposited under ATCC Accession No. PTA-1609, wherein the tissue regenerates plants capable of expressing all the morphological and physiological characteristics of the inbred line PH55C.
Claim 8
Dependent Claim
36 words
A tissue culture according to claim 4, the cells or protoplasts being from a tissue selected from the group consisting of leaves, pollen, embryos, roots, root tips, anthers, silks, flowers, kernels, ears, cobs, husks, and stalks.
Claim 9
Dependent Claim
36 words
A maize plant regenerated from the tissue culture of claim 4, capable of expressing all the morphological and physiological characteristics of inbred line PH55C, representative seed of which have been deposited under ATCC Accession No. PTA-1609.
Claim 10
Dependent Claim
39 words
A method for producing a first generation (F 1 ) hybrid maize seed comprising crossing the plant of claim 2 with a different inbred parent maize plant and harvesting the resultant first generation (F 1 ) hybrid maize seed.
Claim 11
Dependent Claim
18 words
The method of claim 7 wherein inbred maize plant of claim 2 is the female or male parent.
Claim 12
Dependent Claim
21 words
An F 1 hybrid seed produced by crossing the inbred maize plant according to claim 2 with another, different maize plant.
Claim 13
Dependent Claim
15 words
An F 1 hybrid plant, or parts thereof, grown from the seed of claim 9.
Claim 14
Dependent Claim
96 words
A process for producing inbred PH55C, representative seed of which have been deposited under ATCC Accession No. PTA-1609, comprising: (a) planting a collection of seed comprising seed of a hybrid, one of whose parents is inbred PH55C said collection also comprising seed of said inbred; (b) growing plants from said collection of seed; (c) identifying inbred parent plants; (d) selecting said inbred parent plant; (e) controlling pollination through selfing, which preserves the homozygosity of said inbred parent plant; and (f) collecting morphological and/or physiological data so that said inbred parent may be identified as inbred PH55C.
Claim 15
Dependent Claim
96 words
A process for producing inbred PH55C, representative seed of which have been deposited under ATCC Accession No. PTA-1609, comprising: (a) planting a collection of seed comprising seed of a hybrid, one of whose parents is inbred PH55C said collection also comprising seed of said inbred; (b) growing plants from said collection of seed; (c) identifying inbred parent plants; (d) selecting said inbred parent plant; (e) controlling pollination through selfing, which preserves the homozygosity of said inbred parent plant; and (f) collecting morphological and/or physiological data so that said inbred parent may be identified as inbred PH55C.
Claim 16
Dependent Claim
14 words
The process of claim 11 wherein step (c) comprises identifying plants with decreased vigor.
Claim 17
Dependent Claim
16 words
The process of claim 11 wherein step (c) comprises identifying seeds or plants with homozygous genotype.
Claim 18
Independent Claim
54 words
A method for producing a PH55C-derived maize plant, comprising: (a) crossing inbred maize line PH55C, representative seed of said line having been deposited under ATCC Accession No. PTA-1609, with a second maize plant to yield progeny maize seed; (b) growing said progeny maize seed, under plant growth conditions, to yield said PH55C-derived maize plant.
Claim 19
Independent Claim
54 words
A method for producing a PH55C-derived maize plant, comprising: (a) crossing inbred maize line PH55C, representative seed of said line having been deposited under ATCC Accession No. PTA-1609, with a second maize plant to yield progeny maize seed; (b) growing said progeny maize seed, under plant growth conditions, to yield said PH55C-derived maize plant.
Claim 20
Dependent Claim
96 words
A PH55C-derived maize plant, or parts thereof, produced by the method of claim 14, said PH55C-derived maize plant expressing a combination of at least two PH55C traits selected from the group consisting of: a relative maturity of approximately 91 based on the Comparative Relative Maturity Rating System for harvest moisture of grain, above average pollen weight, above average tassel size, hard-textured kernels, above average yields, very good root lodging resistance, above average staygreen, above average brittle stalk resistance, above average drydown, and adapted to the Northwest, Northcentral, and Northeast regions of the United States, and Canada.
Claim 21
Dependent Claim
80 words
The method of claim 14, further comprising: (c) crossing said PH55C-derived maize plant with itself or another maize plant to yield additional PH55C-derived progeny maize seed; (d) growing said progeny maize seed of step (c) under plant growth conditions, to yield additional PH55C-derived maize plants; (e) repeating the crossing and growing steps of (c) and (d) from 0 to 4 times to generate further PH55C-derived maize plants, wherein said further PH55C-derived maize plants express traits genetically derived from inbred PH55C.
Claim 22
Dependent Claim
15 words
A further PH55C-derived maize plant, or parts thereof, produced by the method of claim 16.
Claim 23
Dependent Claim
21 words
The method of claim 14, still further comprising utilizing plant tissue culture methods to derive progeny of said PH55C-derived maize plant.
Claim 24
Dependent Claim
96 words
A PH55C-derived maize plant, or parts thereof, produced by the method of claim 18, said PH55C-derived maize plant expressing a combination of at least two PH55C traits selected from the group consisting of: a relative maturity of approximately 91 based on the Comparative Relative Maturity Rating System for harvest moisture of grain, above average pollen weight, above average tassel size, hard-textured kernels, above average yields, very good root lodging resistance, above average staygreen, above average brittle stalk resistance, above average drydown, and adapted to the Northwest, Northcentral, and Northeast regions of the United States, and Canada.
Claim 25
Dependent Claim
36 words
The maize plant, or parts thereof, of claim 2, wherein the plant or parts thereof have been transformed so that its genetic material contains one or more transgenes operably linked to one or more regulatory elements.
Claim 26
Dependent Claim
65 words
A method for producing a maize plant that contains in its genetic material one or more transgenes, comprising crossing the maize plant of claim 20 with either a second plant of another maize line, or a non-transformed maize plant of the line PH55C, so that the genetic material of the progeny that result from the cross contains the transgene(s) operably linked to a regulatory element.
Claim 27
Dependent Claim
12 words
Maize plants, or parts thereof, produced by the method of claim 21.
Claim 28
Dependent Claim
103 words
A maize plant, or parts thereof, wherein at least one ancestor of said maize plant is the maize plant of claim 2, said maize plant expressing a combination of at least two PH55C traits selected from the group consisting of: a relative maturity of approximately 91 based on the Comparative Relative Maturity Rating System for harvest moisture of grain, above average pollen weight, above average tassel size, hard-textured kernels, above average yields, very good root lodging resistance, above average staygreen, above average brittle stalk resistance, above average drydown, and adapted to the Northwest, Northcentral, and Northeast regions of the United States, and Canada.
Claim 29
Dependent Claim
51 words
A method for developing a maize plant in a maize plant breeding program using plant breeding techniques, which include employing a maize plant, or its parts, as a source of plant breeding material, comprising: obtaining the maize plant, or its parts, of claim 2 as a source of said breeding material.
Claim 30
Dependent Claim
36 words
The maize plant breeding program of claim 24 wherein plant breeding techniques are selected from the group consisting of: recurrent selection, backcrossing, pedigree breeding, restriction fragment length polymorphism enhanced selection, genetic marker enhanced selection, and transformation.
Claim 31
Dependent Claim
95 words
A maize plant, or parts thereof, produced by the method of claim 24, said PH55C-derived maize plant expressing a combination of at least two PH55C traits selected from the group consisting of: a relative maturity of approximately 91 based on the Comparative Relative Maturity Rating System for harvest moisture of grain, above average pollen weight, above average tassel size, hard-textured kernels, above average yields, very good root lodging resistance, above average staygreen, above average brittle stalk resistance, above average drydown, and adapted to the Northwest, Northcental and Northeast regions of the United States, and Canada.
Claim 32
Dependent Claim
98 words
The further PH55C-derived maize plant, or parts thereof, of claim 17, wherein said further PH55C-derived maize plant, or parts thereof, express a combination of at least two PH55C traits selected from the group consisting of: a relative maturity of approximately 91 based on the Comparative Relative Maturity Rating System for harvest moisture of grain, above average pollen weight, above average tassel size, hard-textured kernels, above average yields, very good root lodging resistance, above average staygreen, above average brittle stalk resistance, above average drydown, and adapted to the Northwest, Northcental and Northeast regions of the United States, and Canada.
References Cited (Backward Citations)
EP0160390A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-09-19 | 2004-03-20 | 2004-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-09-19 | 2008-03-20 | 2008-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-09-19 | 2012-03-20 | 2012-09-19 | $7700.00 | Window Closed / Lapsed |